Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Que dia Bernhard Langer (2) ganhou?
 ###Tabelas: CREATE TABLE player_statistics (player_statistics_id AUTO_INCREMENT PRIMARY KEY, Shirt Number INT, Player Name VARCHAR, Games Played INT, Total Points INT, 2-Points INT, 3-Points INT, Free Throw INT) CREATE TABLE c-liners (c-liners_id AUTO_INCREMENT PRIMARY KEY, Model VARCHAR, Build year VARCHAR, Total produced INT, Wheel arrangement VARCHAR, Prime mover VARCHAR, Power output VARCHAR) CREATE TABLE tournament_results (tournament_results_id AUTO_INCREMENT PRIMARY KEY, Date VARCHAR, Tournament VARCHAR, Location VARCHAR, Purse( $ ) INT, Winner VARCHAR, Score VARCHAR, 1st Prize( $ ) VARCHAR) CREATE TABLE five_poisons (five_poisons_id AUTO_INCREMENT PRIMARY KEY, Poison/Klesha VARCHAR, Sanskrit VARCHAR, Pali VARCHAR, Tibetan VARCHAR, Alternate translations VARCHAR) CREATE TABLE elections_to_congress_of_deputies (elections_to_congress_of_deputies_id AUTO_INCREMENT PRIMARY KEY, Election number INT, Election date VARCHAR, District VARCHAR, Province VARCHAR, Took office VARCHAR, Left office VARCHAR)  
SELECT Date FROM tournament_results WHERE Winner = Bernhard Langer (2)